Function crawlFileSystem

packages/utils/src/lib/file-system.ts:77–102

(
  options: CrawlFileSystemOptions<T>,
)

  fileTransform?: (filePath: string) => Promise<T> | T;
};
export async function crawlFileSystem<T = string>(
  options: CrawlFileSystemOptions<T>,
): Promise<T[]> {
  const {
    directory,
    pattern,
    fileTransform = (filePath: string) => filePath as T,
  } = options;

  const files = await readdir(directory);
  const promises = files.map(async (file): Promise<T | T[]> => {
    const filePath = path.join(directory, file);
    const stats = await stat(filePath);

    if (stats.isDirectory()) {
      return crawlFileSystem({ directory: filePath, pattern, fileTransform });
    }
    if (stats.isFile() && (!pattern || new RegExp(pattern).test(file))) {
      return fileTransform(filePath);
    }
    return [];
  });

  const resultsNestedArray = await Promise.all(promises);
  return resultsNestedArray.flat() as T[];
}

export async function findNearestFile(
  fileNames: string[],